Questions tagged [ssd]
Solid-state drive refers to a data storage device that uses solid-state memory to store its persistent data.
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Dell SSD options and 3rd party SSDs in Dell hardware
Anyone have any experience with Dell's SSDs?
We're looking at using them for a machine running a key value database like Tokyo Tyrant.
They're expensive as well as being pretty small. Only 25/50GB ...
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How to send "ATA Secure Erase" command to SSD?
A very good way to erase a SSD which have SED support is to change the password/key. But what to do with those that doesn't have SED support?
This article says
Fortunately it is possible to erase ...
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Do any software RAID solutions support the TRIM command?
This is a broad question -- I'm not asking about a particular RAID level or OS.
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Unit for Total_LBAs_Written in SMART data
I have 3 machines with disks (actually, SSDs) in RAID1, purposely with different brands in an attempt to make it improbable to loose them both simultaneously due to wear-out. They are functional.
They ...
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Proliant ML310e Gen8 Smart Array Predicted Failure Issue with SSD
This is a question related to this one:
Third-party SSD solutions in ProLiant Gen8 servers
but not covered by the question or the answers.
I have an OCZ 120 gig SSD as system drive on a Proliant ...
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Tape vs SSDs backups regarding long-term storage reliability
My question is very specifically about solid state drives, not regular hard drives. I would like to put in place a grandfather-father-son backup scheme, with the SSDs being used for the grandfather ...
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Age replacement policy for hard disks and SSDs at servers
I'm planing an age replacement policy for our storage and servers. Most of them are for DBs and some for images (static content) so yes, they have an huge I/O everytime.
Also, we use Samsung 840 Pro ...
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SW SSD Raid 1 over HW RAID 10
A provider(data center) recommended I go with 1TB SSDs in a software RAID 1 over HW RAID 10 with mechanical drives.
Their quote:
Typically SSDs are most reliable than RAID cards and since you have
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Install 2.5" SSD drives into PowerEdge 2950
I have a PowerEdge 2950 (not III) rack-mounted server with a 3.5" SAS backplane. I'd like to put one or two Intel X25-M drives into it for hosting of a few virtual servers on faster disk. Can this be ...
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Does it makes sense to run "optimize table" when the mysql database is stored on SSD?
The manual says about "optimize table":
"Deleted rows are maintained in a
linked list and subsequent INSERT
operations reuse old row positions.
You can use OPTIMIZE TABLE to reclaim
the ...
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Rapid SSD vs. RAM in servers
Per GB prices of rapid SSD (like Intel X25-E) come close to prices of high-end RAM.
So what extra advantages does SSD give you? What are particular reasons, why you buy SSD, instead of just putting ...
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Poor write performance of software RAID10 array of 8 SSD drives
I have server with Supermicro X10DRW-i motherboard and RAID10 array of 8 KINGSTON SKC400S SSDs; OS is CentOS 6
# cat /proc/mdstat
Personalities : [raid10] [raid1]
md2 : active raid10 sdj3[9](S) ...
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ZFS with L2ARC (SSD) slower for random seeks than without L2ARC
I am currently testing ZFS (Opensolaris 2009.06) in an older fileserver to evaluate its use for our needs. Our current setup is as follows:
Dual core (2,4 GHz) with 4 GB RAM
3x SATA controller with ...
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SSD IOPS on linux, DIRECT much faster than buffered, fio
I have a 30Tb-sized hardware RAID-6 system (LSI 9280-8e) of 10 DC-S4500 Intel SSDs that is used for database purposes. The OS Debian 7.11 with 3.2 kernel. The filesystem is XFS mounted with nobarrier ...
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With a 500GB SSD and a 250GB SSD is it possible to mirror a 250GB partition on the 500GB with the 250GB SSD using ZFS?
So I have a Samsung 250GB 850 Evo SSD and a 500GB 860 EVO SSD. I'm looking at using Solaris for this server (so looking at whether doing this with ZFS is possible). Is it possible to mirror the 250GB ...
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How is LSI FastPath different from Software RAID?
This question pertains to SSDs on RAID levels without parity (like RAID 0, 1, 10).
The recommended settings for FastPath are to set the Write Policy to Write Through, Read Policy to No Read Ahead and ...
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Why does storage's performance change at various queue depths?
I'm in the market for a storage upgrade for our servers.
I'm looking at benchmarks of various PCIe SSD devices and in comparisons I see that IOPS change at various queue depths.
How can that be and ...
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LSI 9260-8i w/ 6 256gb SSDs - RAID 5, 6, 10, or bad idea overall?
We're provisioning a new production server for our reasonably busy website. Our choice of host have available a 6 drive configuration with a LSI 9260-8i card.
My initial thought was to fill all six ...
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Which FileSystem is best for CentOS 5 on SSD?
Background:
We have gigs of data, which require to process large files simultaneously and in parallel with similar processes. We are going to get SSD just because of fastest latency.
We will install ...
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Why do my SSD read latency benchmarks get markedly worse when I put an XFS filesystem on top?
I am benchmarking a small server box based on the SuperMicro E300-8D. I've installed the latest CentOS 7.5 with the latest updates, 64GB of DDR4-2100 RAM, and a Samsung 970 EVO 1TB NVMe SSD. The OS ...
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How to overprovision an SSD for holding a smaller ZFS volume (ZVOL)?
I have a pair of 480 GB "Datacenter" SSDs (SAMSUNG MZ7LM480HMHQ-00005) that will make up a ZFS pool in a mirroring configuration. The pool's only content will be a ZFS volume (ZVOL) for a virtual ...
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Trim support in Hardware RAID (Perc H700)
We are about to order a dell R610 with a H700. We were thinking of using 2 X Samsung 850 Pro 512Gb drives in RAID 1.
The question is does the Perc H700 support TRIM in hardware RAID 1? The answers I ...
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SMART - Understanding Offline Data Collection
I have two Kingston A400 120GB SSD as cache in a Synology NAS, which don't seem to support automatic offline data collection.
# smartctl -d sat -c /dev/sdc | grep -i "Auto Offline data collection"
...
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Low SSD write IOPS (~100)
I am experiencing very low IOPS with a SSD in my server.
I noticed this when running a mysql database server, which performed very bad when there were many (~100 per second) updates to an InnoDB ...
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Running fstrim as cronjob - what happens when interrupted by shutdown
One of the ways to implement fstrim on a file system, it to make a cron.daily task that runs fstrim /. This is preferred over -o discard (mount option) by a lot of people, because the latter can make ...
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What is the Long term stability of NVMe or SSD stored data?
Background:
We need ready access to 30TB of audio data, although only a small fraction of it is ever requested for playback, that playback needs to be done immediately even for multi-year old data. ...
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setup lowcost image storage server with 24x SSD array to get high IOPS?
I want to build let's name it a lowcost Ra*san which would host for our social site the images (many millions) we have 5 sizes of every photo with 3 KB, 7 KB, 15 KB, 25 KB and 80 KB per Image.
My ...
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Pros and cons of installing ESXi on a SSD vs USB flash drive?
I'm debating on doing an ESXi 4.1/5.0 installation on a USB stick or a pair of 32GB SATA II SSDs (RAID1 mirror). According to VMWare's documentation, when ESXi is booting it looks for a 4GB space for ...
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Cloning data from a damaged SSD
The SSD went into read-only mode, so you need to move the partition to a working SSD, but I encountered the fact that the LVM size is different:
#lvm pvscan
PV /dev/sdc3 VG pve lvm2 [&...
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How to limit ZFS writes on NVME SSD in RAID1 to avoid rapid disk wear?
Currently I'm running Proxmox 5.3-7 on ZFS with few idling debian virtual machines. I'm using two SSDPE2MX450G7 NVME drives in RAID 1. After 245 days of running this setup the S.M.A.R.T values are ...
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How can I unfreeze an SSD connected to a remote server?
I don't have physical access to the machine, so I can't unplug the drive.
# hdparm -I /dev/sda | grep frozen
frozen
The advice I've read elsewhere is to hotplug the drive, pull the power ...
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Do you use SSD in a production environment yet? [closed]
I'm not asking whether or not it's worth the money, as in Question 2425. I'm interested to see the level of acceptance in the production world up to now. Money can certainly relate to the answer, ...
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ZFS: best practices for adding cache to pools
sounds like dumb question but there are no ready answers at SF
can the cache pool have different name than the zpool?
eg: suppose there is a zpool "tank" serving NFS and iSCSI
can a new cache pool ...
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SSD as single drive in workstation pros and cons
What are the pros and cons of using an SSD as the only drive in a workstation instead of an array of several HDDs or a fast 10k/15k HDD?
To be more specific, Intel X25-M 80GB with Windows 7 x86-64 ...
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Samsung 850 EVO + HP P410 limited iops?
I´m experiencing a weird write iops limitation with a HP P410 256mb cache controller and 4x consumer grade ssd´s (Samsung EVO 850) in RAID5/10. After upgrade to latest firmware (6.64) for HP P410 ...
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Can I use an SSD as Cache to a NAS?
There is a NAS with Raid 10 that holds resources.
At a time, around 24 machines try to access the same resource (3d rendering in a render farm).
Although the network is 1Gbps and NAS is fast, the ...
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How can I mount the SSD drive on Amazon's m3.medium?
Amazon's m3.medium instance comes with a 4GB SSD Drive:
But I can't seem to find the device using df:
$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/xvda1 20G 2.9G 16G 16% /...
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SSD drives and RAID configurations vs LVM
Background:
I'm familiar with the basic RAID levels, and am curious to know if using SSD devices in a RAID0 or RAID5 would be a better deployment than adding them to a large LVM volume.
Specifically,...
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HP Proliant DL360 G8 & G9 with SAMSUNG PM863a SSDs
Does anyone use Samsung PM863a SSDs in HP DL360 G8 & G9s - specifically in a Windows Server 2016 Storage Space Direct mirrored implementation ? What is your experience of this ?
Having seen ...
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What is the best Solid State File System (SSDFS) for Linux?
EXT4 is not a solid state file system. It won't take full advantage of the hardware and it will ware out the drive. So what is the best Solid State File System for Linux? I am looking forward to ...
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Server Hot Swap Hard Drives
We have a HP Proliant DL380 G9 server. We have a separate data drive which consists of 4 x 1TB 7.2k 6Gb hot-swappable SAS drives RAID 5'd to provide a 3GB logical drive. We've noticed the performance ...
David Colley
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ZFS cksum errors on LSI 9207-9i (SAS2308) with Samsung 850 Pro SSDs
I am testing an LSI 9207-8i controller with 8x Samsung 850 Pro 256GB SSDs attached. SSDs are running latest firmware EXM02B6Q, controller is running P17 and has exhibited same issues with P19.
Server ...
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How to update SSD Firmware on RAID Controllers
Got some servers with RAID Controllers and SSD.
Raid Controller: LSI MegaRaid 9271-4i
SSD: Intel 520
The MegaRaid controllers have the ability to update drive firmware using MegaCLI.
Intel for ...
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SSDs for archival purposes?
Given the physical characteristics of flash memory, are SSDs an appropriate long-term storage medium for backups, etc.? Is their decay rate such that it is amenable to using them for rolling backups (...
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Cannot remove mount option "discard" on an ext4 file system
I tried to turn off TRIM ("discard") on my ext4 filesystem, but I did not succeed.
I tried to add nodiscard option into /etc/fstab, but I can still see this:
# tune2fs -l /dev/md2 | grep ...
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Is it safe to place write-intensive partitions on an SSD (in an SSD+HDD system)?
I'm setting up a (sort of) powerful workstation for SW development work on Linux. It's a Xeon system with multiple cores, 32GB memory, a large HDD and a 120 GB SSD (Samsung
MZ7WD120HAFV a.k.a. SM843T)...
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ZFS L2ARC for Mirror Pool
I was reading up on L2ARC for my ZFS. I currently have two Pools, One for Data, and the other for Linux Containers and Virtual Machines. I would like some help with L2ARC, I know how to add it but was ...
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HP Proliant G6 reporting failed SSD drive - alternative strategies for monitoring?
I would like to get your feedback about a controversial situation I found myself in some days ago. I was tasked to use a HP Proliant G6 for development purposes with 2 new (< 2 months, never used ...
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Does any PCIe slot support NVMe SSD's automatically or do I need a specific M.2 slot?
I have been trying to dissect the information I find with googling, but have come to the conclusion that I cannot find with certainty the answer to the following questions:
Given you know the basics ...
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How can I encrypt my SSD but still boot unattended (linux)? [closed]
I have a system that displays video from a camera feed with an overlay, and it must boot without any user intervention (the quicker the better). However, these systems will be in the hands of ...
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